Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1400111moderately pollutedgood251excellent
1300125moderately pollutedgood241excellent
1200118moderately pollutedgood231excellent
1100120moderately pollutedgood251excellent
1000111moderately pollutedgood241excellent
0900149heavily pollutedgood241excellent
0800148heavily pollutedgood241excellent
0700119moderately pollutedexcellent201excellent
0600116moderately pollutedexcellent191excellent
0500138moderately pollutedgood241excellent
0400139moderately pollutedgood301excellent
0300130moderately pollutedgood342excellent
0200183heavily pollutedgood372excellent
0100198heavily pollutedgood362excellent
0000146heavily pollutedgood371excellent
2300153heavily pollutedgood341excellent
2200139moderately pollutedgood311excellent
2100131moderately pollutedgood311excellent
2000127moderately pollutedgood291excellent
1900122moderately pollutedgood291excellent
1800108moderately pollutedgood251excellent
1700110moderately pollutedgood221excellent
1600101moderately pollutedexcellent201excellent
150087lightly pollutedexcellent171excellent